The idea to write this volume arose in May, 1979 on the "Annual Seminar on Sta- tistical Physics" in L hnwitz near G strow, a nice resort place of the P dagogische Hochschule Liselotte Herrmann G strow, where most of the authors were present. The participants of this seminar agreed in the general opinion that the transport properties of charged particle systems starting from ionized gases and ending with liquid metals should be interpreted in a unique...